继续执行异常 [英] Continue execution on Exception

问题描述

以下是我要执行的脚本。这里的问题是一旦发生异常，它停止执行，我在catch块中使用了 continue ，但是没有起作用。 / p>

我还使用了一个 foreach code> while（$ true）循环，但进入无限循环。如何解决？

  $ ErrorActionPreference =Stop; 
尝试
 {
＃循环遍历站点中的每个用户
 foreach（$ user在$ users中）
 {
＃创建一个数组，将用于从域/会员提供者中分割用户名
 $ a = @（）
 
 
 $ displayname = $ user.DisplayName 
 $ userlogin = $ user.UserLogin 
 
 
＃将用户名与域/会员提供者分开
 if（$ userlogin.Contains（'\'））
 {
 $ a = $ userlogin.split（\）
 $ username = $ a [1] 
} 
 elseif（$ userlogin.Contains（'：'））
 {
 $ a = $ userlogin.split（：）
 $ username = $ a [1] 
} 
 
＃创建新的用户名基于给定的输入
 $ newalias = $ newprovider +\+ $ username 
 
 if（-not $ convert）
 {
 $ answer =读取-Host您的第一个用户将从$ userlogin更改为$ newalias。是否要继续处理所有用户？[Y] ，[N] o
 
开关（$ answer）
 {
Y{$ convert = $ true} 
y{$ convert = $如果（（$ userlogin -like$ oldprovider *）和$ convert）
 {
 
 LogWrite（迁移用户旧：+ $ user +新用户：+ $ newalias +）
 move-spuser -identity $ user -newalias $ newalias -ignoresid -Confirm：$ false 
 LogWrite（Done）
} 
} 
} 
 catch {
 LogWrite（捕获异常）
 LogWrite（$ Error [0] .Exception）
} 
  

请帮助。 / p>

解决方案

您使用 try {...} catch {...} 当你想要处理错误。如果你想忽略它们，你应该设置 $ ErrorActionPreference =Continue（或SilentlyContinue）as @ CB建议或使用 -ErrorActionSilentlyContinue来处理提高错误的特定操作。如果你想处理某个指令中的错误，你可以把这个指令放在 try {...} catch {...} 中，而不是整个循环，例如：

  foreach（$ user in $ users）{
 ... 
 try {
如果（（$ userlogin -like$ oldprovider *）和$ convert）{
 LogWrite（迁移用户旧：+ $ user +新用户：+ $ newalias +） 
 move-spuser -identity $ user -newalias $ newalias -ignoresid -Confirm：$ false 
 LogWrite（Done）
} 
} catch {
 LogWrite 捕获异常）
 LogWrite（$ Error [0] .Exception）
} 
} 
  

Below is the script I want to execute. The issue here is once an exception occurs it stops executing, I used continue in the catch block but that did not work. How do I get it working even after an exception occurs it should loop in foreach.

I also used a while($true) loop but that went into infinite loop. How to go about it?

$ErrorActionPreference = "Stop";
try 
{
# Loop through each of the users in the site
foreach($user in $users)
{
    # Create an array that will be used to split the user name from the domain/membership provider
    $a=@()


    $displayname = $user.DisplayName
    $userlogin = $user.UserLogin


    # Separate the user name from the domain/membership provider
    if($userlogin.Contains('\'))
    {
        $a = $userlogin.split("\")
        $username = $a[1]
    }
    elseif($userlogin.Contains(':'))
    {
        $a = $userlogin.split(":")
        $username = $a[1]
    }

    # Create the new username based on the given input
    $newalias = $newprovider + "\" + $username

    if (-not $convert)
    {
        $answer = Read-Host "Your first user will be changed from $userlogin to $newalias. Would you like to continue processing all users? [Y]es, [N]o"

        switch ($answer)
        {
            "Y" {$convert = $true}
            "y" {$convert = $true}
            default {exit}
        }
    }   

    if(($userlogin -like "$oldprovider*") -and $convert)
    {  

        LogWrite ("Migrating User old : " + $user + " New user : " + $newalias + "    ")
        move-spuser -identity $user -newalias $newalias -ignoresid -Confirm:$false
        LogWrite ("Done")
    }   
} 
}
catch  {
    LogWrite ("Caught the exception")
    LogWrite ($Error[0].Exception)
} 

Kindly help.

解决方案

You use try {...} catch {...} when you want to handle errors. If you want to ignore them, you should set $ErrorActionPreference = "Continue" (or "SilentlyContinue") as @C.B. suggested, or use -ErrorAction "SilentlyContinue" for the particular operation raising the error. If you want to handle errors from a certain instruction, you'd put that instruction in the try {...} catch {...} block, not the entire loop, e.g.:

foreach($user in $users) {
  ...
  try {
    if(($userlogin -like "$oldprovider*") -and $convert) {  
      LogWrite ("Migrating User old : " + $user + " New user : " + $newalias + "    ")
      move-spuser -identity $user -newalias $newalias -ignoresid -Confirm:$false
      LogWrite ("Done")
    }   
  } catch {
    LogWrite ("Caught the exception")
    LogWrite ($Error[0].Exception)
  }
} 

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